keyword
MENU ▼
Read by QxMD icon Read
search

TRP channel

keyword
https://www.readbyqxmd.com/read/28817717/short-report-trpv1-polymorphism-1911-a-g-alters-capsaicin-induced-sensory-changes-in-healthy-subjects
#1
Julia Forstenpointner, Matti Förster, Denisa May, Friederike Hofschulte, Ingolf Cascorbi, Gunnar Wasner, Janne Gierthmühlen, Ralf Baron
BACKGROUND: C-fibers express transient receptor potential (TRP) channels. These high-voltage gated channels function as integrators of different physical stresses (e.g. heat, protons, ATP). Additionally channel activation can be induced by capsaicin. Topically applied, capsaicin elicits burning pain, heat and mechanical hyperalgesia and serves as a human surrogate model for pain. It was suggested that the TRPV1-variant rs8065080 (1911A>G) plays a pivotal role in patients with neuropathic pain syndromes...
2017: PloS One
https://www.readbyqxmd.com/read/28814817/conjugated-polymers-mediate-effective-activation-of-the-mammalian-ion-channel-transient-receptor-potential-vanilloid-1
#2
F Lodola, N Martino, G Tullii, G Lanzani, M R Antognazza
Selective and rapid regulation of ionic channels is pivotal to the understanding of physiological processes and has a crucial impact in developing novel therapeutic strategies. Transient Receptor Potential (TRP) channels are emerging as essential cellular switches that allow animals to respond to their environment. In particular, the Vanilloid Receptor 1 (TRPV1), besides being involved in the body temperature regulation and in the response to pain, has important roles in several neuronal functions, as cytoskeleton dynamics, injured neurons regeneration, synaptic plasticity...
August 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28807149/muscling-in-on-trp-channels-in-vascular-smooth-muscle-cells-and-cardiomyocytes
#3
REVIEW
Lucía Alonso-Carbajo, Miklos Kecskes, Griet Jacobs, Andy Pironet, Ninda Syam, Karel Talavera, Rudi Vennekens
The human TRP protein family comprises a family of 27 cation channels with diverse permeation and gating properties. The common theme is that they are very important regulators of intracellular Ca(2+) signaling in diverse cell types, either by providing a Ca(2+) influx pathway, or by depolarising the membrane potential, which on one hand triggers the activation of voltage-gated Ca(2+) channels, and on the other limits the driving force for Ca(2+) entry. Here we focus on the role of these TRP channels in vascular smooth muscle and cardiac striated muscle...
September 2017: Cell Calcium
https://www.readbyqxmd.com/read/28807146/trp-channel-pores-and-local-calcium-signals
#4
REVIEW
Marie Mulier, Joris Vriens, Thomas Voets
Calcium signals control a plethora of essential cellular functions ranging from secretion and contraction to gene expression and sensory signaling cascades. An essential part of intracellular calcium signals originates from the transmembrane flux of calcium ions, which is mainly mediated through different calcium-permeable cation channels with variable calcium selectivity. Opening of individual calcium permeable channels induces a local cytosolic calcium rise that can be highly restricted in time and space...
September 2017: Cell Calcium
https://www.readbyqxmd.com/read/28807145/a-benzothiadiazine-derivative-and-methylprednisolone-are-novel-and-selective-activators-of-transient-receptor-potential-canonical-5-trpc5-channels
#5
Holger Beckmann, Julia Richter, Kerstin Hill, Nicole Urban, Horst Lemoine, Michael Schaefer
The transient receptor potential canonical channel 5 (TRPC5) is a Ca(2+)-permeable ion channel, which is predominantly expressed in the brain. TRPC5-deficient mice exhibit a reduced innate fear response and impaired motor control. In addition, outgrowth of hippocampal and cerebellar neurons is retarded by TRPC5. However, pharmacological evidence of TRPC5 function on cellular or organismic levels is sparse. Thus, there is still a need for identifying novel and efficient TRPC5 channel modulators. We, therefore, screened compound libraries and identified the glucocorticoid methylprednisolone and N-[3-(adamantan-2-yloxy)propyl]-3-(6-methyl-1,1-dioxo-2H-1λ(6),2,4-benzothiadiazin-3-yl)propanamide (BTD) as novel TRPC5 activators...
September 2017: Cell Calcium
https://www.readbyqxmd.com/read/28800680/pharmacological-inhibition-of-fsgs-related-trpc6-gain-of-function-mutants-by-semisynthetic-larixol-derived-compounds
#6
Nicole Urban, Sonja Neuser, Anika Hentschel, Sebastian Köhling, Jörg Rademann, Michael Schaefer
BACKGROUND AND PURPOSE: Gain of function mutations in TRPC6 can cause autosomal dominant forms of focal segmental glomerulosclerosis (FSGS). Validated inhibitors of TRPC6 that are biologically active on FSGS-related TRPC6 mutants are eagerly sought. EXPERIMENTAL APPROACH: We synthesized new TRPC6-inhibiting modulators from larixol, a resiniferous constituent of Larix decidua, and tested the potency and selectivity in cell lines stably expressing various TRP channel isoforms...
August 11, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28790335/involvement-of-transient-receptor-potential-cation-channel-member-a1-activation-in-the-irritation-and-pain-response-elicited-by-skin-lightening-reagent-hydroquinone
#7
Yan Tai, Chuan Wang, Zhihua Wang, Yi Liang, Junying Du, Dongwei He, Xiaoyan Fan, Sven-Eric Jordt, Boyi Liu
Hydroquinone (HQ) is one of the most frequently used and effective skin-lightening products to treat skin hyperpigmentation disorders, including postinflammatory hyperpigmentation, melasma and solar lentigines. HQ is also widely used in cosmetic products for skin whitening. However, HQ treatment can evoke substantial skin irritation, a side effect that remains poorly understood. Here we demonstrate that HQ is an activator of the peripheral irritant receptor transient receptor potential (TRP) cation channel member A1 (TRPA1)...
August 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28790178/heteromeric-channels-formed-by-trpc1-trpc4-and-trpc5-define-hippocampal-synaptic-transmission-and-working-memory
#8
Jenny Bröker-Lai, Astrid Kollewe, Barbara Schindeldecker, Jörg Pohle, Vivan Nguyen Chi, Ilka Mathar, Raul Guzman, Yvonne Schwarz, Alan Lai, Petra Weißgerber, Herbert Schwegler, Alexander Dietrich, Martin Both, Rolf Sprengel, Andreas Draguhn, Georg Köhr, Bernd Fakler, Veit Flockerzi, Dieter Bruns, Marc Freichel
Canonical transient receptor potential (TRPC) channels influence various neuronal functions. Using quantitative high-resolution mass spectrometry, we demonstrate that TRPC1, TRPC4, and TRPC5 assemble into heteromultimers with each other, but not with other TRP family members in the mouse brain and hippocampus. In hippocampal neurons from Trpc1/Trpc4/Trpc5-triple-knockout (Trpc1/4/5(-/-)) mice, lacking any TRPC1-, TRPC4-, or TRPC5-containing channels, action potential-triggered excitatory postsynaptic currents (EPSCs) were significantly reduced, whereas frequency, amplitude, and kinetics of quantal miniature EPSC signaling remained unchanged...
August 8, 2017: EMBO Journal
https://www.readbyqxmd.com/read/28782267/4-5-di-o-caffeoylquinic-acid-from-ligularia-fischeri-suppresses-inflammatory-responses-through-trpv1-activation
#9
Yiseul Kim, Jung Tae Kim, Joonwoo Park, Hee Jin Son, Eun-Young Kim, Young Joo Lee, Mee-Ra Rhyu
Ligularia fischeri (Ledeb.) Turcz., a perennial plant native to northeastern Asia, has long been used as folk remedies for the alleviation of inflammatory symptoms. We investigated whether the extract of L. fischeri (LFEx) and caffeoylquinic acid (CQA) derivatives, the pharmacologically active ingredients identified from L. fischeri, regulate inflammation via a transient receptor potential vanilloid 1 (TRPV1)-mediated pathway. Changes in intracellular Ca(2+) levels to the LFEx and trans-5-O-CQA, 3,4-di-O-CQA, 3,5-di-O-CQA, and 4,5-di-O-CQA were monitored in TRPV1-expressing human embryonic kidney cell HEK 293T...
August 7, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28769802/cellular-and-molecular-targets-of-menthol-actions
#10
REVIEW
Murat Oz, Eslam G El Nebrisi, Keun-Hang S Yang, Frank C Howarth, Lina T Al Kury
Menthol belongs to monoterpene class of a structurally diverse group of phytochemicals found in plant-derived essential oils. Menthol is widely used in pharmaceuticals, confectionary, oral hygiene products, pesticides, cosmetics, and as a flavoring agent. In addition, menthol is known to have antioxidant, anti-inflammatory, and analgesic effects. Recently, there has been renewed awareness in comprehending the biological and pharmacological effects of menthol. TRP channels have been demonstrated to mediate the cooling actions of menthol...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28769017/trp-channels-in-oxygen-physiology-distinctive-functional-properties-and-roles-of-trpa1-in-o2-sensing
#11
Yasuo Mori, Nobuaki Takahashi, Tatsuki Kurokawa, Shigeki Kiyonaka
Transient Receptor Potential (TRP) proteins form cation channels characterized by a wide variety of activation triggers. Here, we overview a group of TRP channels that respond to reactive redox species to transduce physiological signals, with a focus on TRPA1 and its role in oxygen physiology. Our systematic evaluation of oxidation sensitivity using cysteine-selective reactive disulphides with different redox potentials reveals that TRPA1 has the highest sensitivity to oxidants/electrophiles among the TRP channels, which enables it to sense O2...
2017: Proceedings of the Japan Academy. Series B, Physical and Biological Sciences
https://www.readbyqxmd.com/read/28767579/the-identification-of-the-trpm8-channel-on-primary-culture-of-human-nasal-epithelial-cells-and-its-response-to-cooling
#12
Shao-Cheng Liu, Hsuan-Hsuan Lu, Hueng-Chuen Fan, Hsing-Won Wang, Hang-Kang Chen, Fei-Peng Lee, Chong-Jen Yu, Yueng-Hsiang Chu
BACKGROUND: It has been proposed that the transient receptor potential (TRP) channel Melastatin 8 (TRPM8) is a cold-sensing TRP channel. However, its presence and its role in the nasal cavity have not yet been fully studied. METHODS: Immunohistology was used to study TRPM8 receptors in both the nasal mucosa tissue and the primary cultures of human nasal cells. Cells from primary cultures were immunostained with antibodies to TRPM8, mucin, cytokeratin (CK)-14, CK-18, and vimentin...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28766746/sensory-effects-of-transient-receptor-potential-channel-agonists-on-whole-mouth-saliva-extensional-rheology
#13
Jack William Houghton, Joachim Hans, Manuel Pesaro, Jakob Peter Ley, Guy Howard Carpenter, Gordon Proctor
The extensional rheology (ER) of saliva is a property associated with its ability to coat surfaces and is important for the maintenance of a normal mouth feeling. Transient receptor potential (TRP) channels are expressed in the oral cavity and this study investigated how the sensory effects of TRP channel agonists modify the ER of saliva. Healthy volunteers rinsed with solutions containing a TRP agonist. Unstimulated whole mouth saliva (WMS) was collected prior to rinsing and WMS was collected during the first and second minutes after the mouth rinse...
August 2017: Journal of Texture Studies
https://www.readbyqxmd.com/read/28762890/the-latency-of-the-light-response-is-modulated-by-the-phosphorylation-state-of-drosophila-trp-at-a-specific-site
#14
Ben Katz, Olaf Voolstra, Hanan Tzadok, Bushra Yasin, Elisheva Rhodes-Modrov, Jonas-Peter Bartels, Lisa Strauch, Armin Huber, Baruch Minke
Drosophila photoreceptors respond to oscillating light of high frequency (∼100 Hz), while increasing the oscillating light intensity raises the maximally detected frequency. Recently, we reported that dephosphorylation of the light-activated TRP ion channel at S936 is a fast, graded, light-, and Ca(2+)-dependent process. We further found that this process affects the detection limit of high frequency oscillating light. Accordingly, transgenic Drosophila, which do not undergo phosphorylation at the S936-TRP site (trp(S936A)), revealed a short time-interval before following the high stimulus frequency (oscillation-lock response) in both dark- and light-adapted flies...
August 1, 2017: Channels
https://www.readbyqxmd.com/read/28760991/presumptive-trp-channel-ced-11-promotes-cell-volume-decrease-and-facilitates-degradation-of-apoptotic-cells-in-caenorhabditis-elegans
#15
Kaitlin Driscoll, Gillian M Stanfield, Rita Droste, H Robert Horvitz
Apoptotic cells undergo a series of morphological changes. These changes are dependent on caspase cleavage of downstream targets, but which targets are significant and how they facilitate the death process are not well understood. In Caenorhabditis elegans an increase in the refractility of the dying cell is a hallmark morphological change that is caspase dependent. We identify a presumptive transient receptor potential (TRP) cation channel, CED-11, that acts in the dying cell to promote the increase in apoptotic cell refractility...
August 15, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28760561/trps-and-ca-2-in-cell-death-and-survival
#16
REVIEW
Ingrid Fliniaux, Emmanuelle Germain, Valerio Farfariello, Natalia Prevarskaya
Transient Receptor Potential (TRP) family mediate the influx of monovalent and/or divalent cations into cells in response to environmental stimuli. Pharmacological or genetic manipulations of TRP channels demonstrate that TRP channels influence cell death rates, prolonging or shortening of cell survival. Due to their diverse cellular localization, TRP channels mediated Ca(2+) influx generates distinct intracellular Ca(2+) signals that regulate downstream pathways converging to apoptosis or survival. In this review, we summarize the accumulated knowledge focused on how TRP channel regulate cell fate and may affect different pathologies including cardiovascular, neurological, metabolic or neoplastic disorders...
July 15, 2017: Cell Calcium
https://www.readbyqxmd.com/read/28751212/identification-of-three-signaling-molecules-required-for-calcineurin-dependent-monopolar-growth-induced-by-the-dna-replication-checkpoint-in-fission-yeast
#17
Kazunori Kume, Tomoyo Hashimoto, Masashi Suzuki, Masaki Mizunuma, Takashi Toda, Dai Hirata
Cell polarity is coordinately regulated with the cell cycle. Growth polarity of the fission yeast Schizosaccharomyces pombe transits from monopolar to bipolar during G2 phase, termed NETO (new end take off). Upon perturbation of DNA replication, the checkpoint kinase Cds1/CHK2 induces NETO delay through activation of Ca(2+)/calmodulin-dependent protein phosphatase calcineurin (CN). CN in turn regulates its downstream targets including the microtubule (MT) plus-end tracking CLIP170 homologue Tip1 and the Casein kinase 1γ Cki3...
July 24, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28732812/extracts-and-compounds-active-on-trp-ion-channels-from-waldheimia-glabra-a-ritual-medicinal-plant-from-himalaya
#18
Annamaria Giorgi, Angela Bassoli, Gigliola Borgonovo, Sara Panseri, Alessandra Manzo, Daniela Pentimalli, Aniello Schiano Moriello, Luciano De Petrocellis
BACKGROUND: Waldheimia glabra (Decne.) Regel is a wild plant from the Himalayan Mountains, commonly known as Smooth Ground Daisy. This plant is traditionally used by local populations in religious rituals (incense) or in traditional herbal medicine to treat skin diseases, headache, joint pain and fever. In literature few data are available on the investigation of this aromatic plant. PURPOSE: The present work aims at deepening knowledge about the chemical composition of W...
August 15, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28722259/l-ornithine-and-l-lysine-stimulate-gastrointestinal-motility-via-transient-receptor-potential-vanilloid-1
#19
Junya Nakato, Yee Yin Ho, Ryo Omae, Takafumi Mizushige, Kunitoshi Uchida, Makoto Tominaga, Minji Kim, Tsuyoshi Goto, Nobuyuki Takahashi, Teruo Kawada, Saori Akiduki, Ryuhei Kanamoto, Kousaku Ohinata
SCOPE: The gastrointestinal (GI) tract senses and responds to intraluminal nutrients and these interactions often affect GI functions. We found that, among basic amino acids, L-ornithine (Orn) and L-lysine (Lys) stimulated but L-arginine (Arg) suppressed GI motility after oral administration (24 mmol/kg) in mice (Orn and Lys, 14.3 and 26.4% promotion; Arg, 7.7% suppression). We investigated the mechanism of the action of Orn and Lys on GI motility. METHODS AND RESULTS: Orn-induced promotion of small intestinal transit was significantly inhibited (P<0...
July 18, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28720517/transient-receptor-potential-trpm3-channels-pharmacology-signaling-and-biological-functions
#20
REVIEW
Gerald Thiel, Sandra Rubil, Andrea Lesch, Lisbeth A Guethlein, Oliver G Rössler
The transient receptor potential melastatin-3 (TRPM3) channel belongs to the family of transient receptor potential (TRP) cation channels that are expressed in a variety of tissues and cell types, including dorsal root ganglia, cardiomyocytes and pancreatic beta-cells. Although its natural ligands are currently unknown, TRPM3 channels can be activated by the neurosteroid pregnenolone sulfate, the synthetic ligand CIM0216, and by noxious heat. TRPM3 channels are regulated by phosphoinositides, and perhaps by calmodulin...
July 16, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
keyword
keyword
67313
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"